In the countryside of London, a rocket crashes on a farm and Professor Bernard Quatermass and Scotland Yard Inspector Lomax arrive in the spot. The rocket was launched by Prof. Quatermass with the astronauts Victor Carroon, Greene and Reichebheim; however only Carroon is found very sick in the cabin. He is transported to a private clinic to stay under observation despite the protests of his wife Mrs. Judith Carroon. She bribes a nurse to bring Carroon to her and she finds that he is transforming into a monster. Carroon escapes, killing people and animals during his metamorphosis while the Scotland Yard is hunting him down and Dr. Quatermass discovers that his process is an alien invasion.

Also Known As (AKA): The Creeping Unknown, The Quatermass Experiment, Shock